19903345

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{3041}}^1$

素因数の和:3081

約数の個数: 32

約数和(自身を含む): 31539456

約数和(自身を除く): 11636111

約数列:

[1, 5, 7, 11, 17, 35, 55, 77, 85, 119, 187, 385, 595, 935, 1309, 3041, 6545, 15205, 21287, 33451, 51697, 106435, 167255, 234157, 258485, 361879, 568667, 1170785, 1809395, 2843335, 3980669, 19903345]

約数ペア:

[(1, 19903345), (5, 3980669), (7, 2843335), (11, 1809395), (17, 1170785), (35, 568667), (55, 361879), (77, 258485), (85, 234157), (119, 167255), (187, 106435), (385, 51697), (595, 33451), (935, 21287), (1309, 15205), (3041, 6545)]